ROMAN function returns an arabic number in the roman numeral style, as text. @number is the number you want to convert and @type is the type of roman numeral you want.
If @type is 0 or it is omitted, ROMAN returns classic roman numbers. Type 1 is more concise than classic type, type 2 is more concise than type 1, and type 3 is more concise than type 2. Type 4 is simplified type.
If @number is negative or greater than 3999, ROMAN returns #VALUE! error.